TweetWasher collects various basic information on users to provide our service as well as to track usage trends Server load and service popularity . This includes your Twitter user ID and your Twitter screen name. TweetWasher also stores a Twitter API access key associated with your account. This allows us to handel your account on a delayed basis for new tasks to delete IMs, and is only used for the purposes of providing our services. We never store any of your private tweets on our servers, we only delete your Instant messages  on you behalf.